How to Replace Subaru Key Battery: Tips for Extending Life

Ever found yourself stranded with a dead Subaru key fob battery at the worst possible moment? It’s like your trusty sidekick suddenly decided to take a nap. Don’t worry, we’ve all been there. But fear not, because in this article, you’ll learn the simple and quick steps to replace your Subaru key battery like a pro.

Imagine having the power to revive your key fob with just a few easy moves. No more frantic searches for spare keys or last-minute locksmith calls. By mastering the art of replacing your Subaru key battery, you’ll never have to face the inconvenience of a powerless key fob again. It’s all about taking control and being prepared for any battery mishaps that come your way.

Get ready to say goodbye to the stress of a dead key fob and hello to the freedom of knowing you can handle it yourself. With this guide, you’ll be equipped with the knowledge and confidence to tackle the task effortlessly. Let’s dive in and make sure you’re always in charge of your Subaru key’s battery life.

Understanding Subaru Key Fob Battery

When your Subaru key fob battery runs out, it can be frustrating. Here’s what you need to know:

  • The Subaru key fob is a small, handheld device that allows you to lock, unlock, and start your vehicle.
  • Inside the key fob is a small battery that powers its functions.
  • Key fob batteries typically last 2-4 years, depending on usage.
  • A low battery may result in the key fob not working properly or at all.

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To replace the battery, you’ll need to open the key fob, identify the battery type, and install a new one.

  • Key fob buttons require multiple presses to work.
  • Vehicle doesn’t respond to key fob commands.
  • Warning light on the dashboard indicates a low battery.

Understanding your Subaru key fob battery is essential for seamless vehicle access and operation.

Identifying When to Replace the Battery

Knowing when it’s time to replace the Subaru key fob battery is essential for uninterrupted use. Here are signs to look out for:

  • Intermittent Response: If you notice the key fob being less responsive or working only at close range, the battery might be running low.
  • Diminished Range: When you have to be closer to the vehicle for the key fob to work, it’s a hint that the battery is losing power.
  • Inconsistent Functionality: Buttons requiring multiple presses or not working at all indicate a weakening battery.

Being aware of these indicators helps you stay ahead and replace the battery promptly to avoid unexpected issues.

Tools Needed for Battery Replacement

When replacing the Subaru key fob battery, it’s essential to have the right tools to ensure a smooth process. Here are the tools you’ll need for the battery replacement:

  • Small flat-head screwdriver: Used to open the key fob and access the battery compartment.
  • Replacement battery: Ensure you have the correct type and size specified for your Subaru key fob model.
  • Clean cloth or tissue: Helpful to handle the battery and key fob components without leaving fingerprints or marks.
  • Optional: If needed, a pair of tweezers can assist in safely removing the old battery.

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Having these tools at your disposal will make the battery replacement a hassle-free task.

Step-by-Step Guide to Replace Subaru Key Battery

So, you’ve noticed your Subaru key fob isn’t working as it should, and it may be time to replace the battery. Here’s a simple guide to help you through the process:

Step 1: Gather Your Tools

First things first, make sure you have all the essential tools ready:

  • Small flat-head screwdriver
  • Replacement battery specified for your key fob model
  • Clean cloth or tissue
  • Optionally, tweezers for safe battery removal

Step 2: Open Your Key Fob

Use the small flat-head screwdriver to carefully open your Subaru key fob. Be gentle to avoid damaging the casing.

Step 3: Replace the Battery

Locate the battery inside the key fob. Use the appropriate tool to remove the old battery. Insert the new battery with the correct orientation.

Step 4: Reassemble Your Key Fob

Once the new battery is securely in place, carefully put the key fob back together. Make sure the pieces fit snugly and there are no loose parts.

Step 5: Test Your Key Fob

Before closing the key fob completely, test it to ensure the new battery is working correctly. If all is well, you’re good to go!

Remember, taking care of your Subaru key fob is essential to ensure smooth functionality. Follow these steps, and you’ll be back to unlocking your car with ease in no time.

Key Battery Replacement Tips
Always use the specified replacement battery for optimum performance.
If you’re unsure about the battery type, check your car manual or consult a professional.
Handle the key fob components gently to avoid any damage during the battery replacement process.

Tips for Extending the Battery Life

  • Turn Off Unused Features: Disable Bluetooth or Wi-Fi when not in use to conserve battery power.
  • Avoid Extreme Temperatures: High or low temperatures can affect battery performance. Store your key fob in moderate conditions.
  • Use the Car Regularly: Inactivity can drain the key fob battery. Ensure regular use to keep it functioning optimally.
  • Keep It Clean: Clean the key fob casing to prevent dirt or debris from affecting battery contacts.
  • Replace Old Batteries Promptly: Change the battery as soon as you notice decreased performance to avoid unexpected failure.

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Item Details
Battery Replacement Prompt replacement
Temperature Moderate conditions
Regular Use Maintain optimal charge
Cleaning Dirt-free environment


That’s it! By following these simple tips and replacing your Subaru key fob battery when needed, you can ensure that your key fob stays functional and reliable. Remember to keep your key fob clean, use it regularly, and avoid extreme temperatures to maximize battery life. With these practices in place, you’ll be able to enjoy the convenience of your Subaru key fob for a long time to come. Happy driving!

Frequently Asked Questions

How do I replace the battery in my Subaru key fob?

To replace the battery in your Subaru key fob, locate the battery compartment on the back of the key fob, remove the old battery, and insert the new battery with the correct orientation. Ensure the battery is securely in place before closing the battery compartment.

How can I extend the battery life of my Subaru key fob?

To extend the battery life of your Subaru key fob, consider turning off unused features like Bluetooth or Wi-Fi, avoiding extreme temperatures, using the key fob regularly, keeping it clean, and promptly replacing old batteries to prevent unexpected failure. Maintaining moderate temperature conditions, regular use, and a dirt-free environment are key factors in prolonging battery life.

Battery industry professional with 5+ years of experience. Bachelor of Science in Electrical Engineering from Georgia Tech. Specializes in power systems and renewable energy.

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